AT96980B - Compensation winding for single-armature converters connected in series with the DC armature. - Google Patents

Compensation winding for single-armature converters connected in series with the DC armature.

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Publication number
AT96980B
AT96980B AT96980DA AT96980B AT 96980 B AT96980 B AT 96980B AT 96980D A AT96980D A AT 96980DA AT 96980 B AT96980 B AT 96980B
Authority
AT
Austria
Prior art keywords
armature
field
direct current
compensation winding
series
Prior art date
Application number
Other languages
German (de)
Inventor
Rudolf Ing Meller
Original Assignee
Rudolf Ing Meller
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rudolf Ing Meller filed Critical Rudolf Ing Meller
Application granted granted Critical
Publication of AT96980B publication Critical patent/AT96980B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Mit dem   Gleicl1stromanker   in Serie geschaltete Kompensationswicklung für Ein-   ankerumformer.   



   Es ist bekannt, dass bei allen Einankerumformern das Gleichstrom-und das   Wechsebtromankerfeld   sich nicht vollständig decken, so dass ein Restfeld übrig bleibt, das eine Anzahl höherer harmonischer Feldwellen enthält. Abgesehen von den hiedurch bedingten grösseren Kupferverlusten im Anker deformiert dieses Restfeld das induktorisch wirksame Hauptfeld um so mehr, je kleiner die Erregeramperewindungen des Hauptfeldes gegenüber denen des Gleichstromankerfeldes sind. Am stärksten tritt dieser Umstand wohl bei den reinen Drehfeldumformern auf, so dass bei stärkerer Belastung zwischen den Kollektorsegmenten sehr ungünstig verteilte Spannungen zustande kommen können. 



   Vorliegende Erfindung hat nun den Zweck, obiges Restfeld bei Umformern gemäss dem Stammpatent Nr. 91735 ganz zu beseitigen und damit eine gleichmässigere Spannungsverteilung am Kollektor und bessere Modellausnutzung zu erzielen. Sie besteht darin, dass der dem Anker entnommene Gleichstrom noch derart in Wicklungen des ihn umgebenden   Eisenrücksehlussringes   geführt wird, dass das ursprünglich dreieckige Gleichstromankerfeld zu einem angenähert   sinusfölmigen   deformiert wird und sich nun mit dem Wechselstromankerfeld wieder nur zu sinusförmigen Feldern zusammenzusetzen vermag. 



   Fig. 1 zeigt in gestrichelten Linien das zweipolige Amperewindungsdiagram für die Gleichstromseite und die zugehörige Sinusgrundwelle in voll ausgezogener Linie. Die Differenz beider (strichpunktiert gezeichnet) ist derartig aufgetragen, dass sofort erkenntlich ist, welche zusätzlichen Amperewindungen noch wirksam sein müssen, um aus dem dreieckigen Amperewindungsdiagram ein sinusförmiges zu erhalten. In Fig. 3 ist eine solche Kompensationswicklung für beispielsweise 18   gleichmässig   verteilte Nuten pro Polteilung, von welchen nur 12 bewickelt sind, für zwei   Polteilungcn   aufgerollt und in Fig. 2 deren zugehöriges Amperewindungsdiagram wiedergegeben. Fig. 4 stellt das Gesamtschaltungsschema mit dem Stromverläufen in   Anker-sowie Kompensationswicklung   für einen zweipoligen Einankerumformer dar.

   In den Kommutierungszonen wird der Luftspalt zweckmässig wie angedeutet erweitert. Ja es kann sogar in diesen Luftspalterweiterungen obige Kompensationswicklung derart verstärkt werden, dass in diesen Zonen ein günstiges Kommutierungsfeld entsteht. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Compensation winding for single-armature converters connected in series with the DC armature.



   It is known that in all single-armature converters the direct current and alternating current armature fields do not completely coincide, so that a residual field remains which contains a number of higher harmonic field waves. Apart from the resulting greater copper losses in the armature, this residual field deforms the main inductive field the more the smaller the excitation amp turns of the main field are compared to those of the direct current armature field. This circumstance occurs most strongly with the pure rotating field converters, so that when there is a higher load between the collector segments, very unfavorably distributed voltages can arise.



   The present invention now has the purpose of completely eliminating the above residual field in converters according to the parent patent no. 91735 and thus achieving a more even voltage distribution on the collector and better model utilization. It consists in the fact that the direct current taken from the armature is still conducted in the windings of the iron return ring surrounding it in such a way that the originally triangular direct current armature field is deformed to an approximately sinusoidal shape and is now only able to combine with the alternating current armature field to form sinusoidal fields.



   Fig. 1 shows in dashed lines the two-pole ampere turn diagram for the direct current side and the associated sine fundamental wave in full line. The difference between the two (shown in dash-dotted lines) is plotted in such a way that it is immediately apparent which additional ampere turns must still be effective in order to obtain a sinusoidal one from the triangular ampere turn diagram. In FIG. 3, such a compensation winding for, for example, 18 evenly distributed slots per pole pitch, of which only 12 are wound, is rolled up for two pole pitches and the associated ampere turn diagram is shown in FIG. 4 shows the overall circuit diagram with the current flow in the armature and compensation winding for a two-pole single-armature converter.

   In the commutation zones, the air gap is expediently widened as indicated. Indeed, the above compensation winding can even be reinforced in these air gap extensions in such a way that a favorable commutation field is created in these zones.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : Mit dem Gleichstromanker in Serie geschaltete Kompemationbwicklung für Einankerumformer nach Patent Nr: 91735, dadurch gekennzeichnet, dass dieselbe derart um den Gleichstromanker in Nuten des rückschliessenden Eisenringes angeordnet ist, dass das dreieckige Gleichstromankerfeld zu einem an- genähert sinusförmigen Felde deformiert wird, zum Zwecke, Oberfelder und ungleichmässige Spannungsverteilungen am Kollektor zu vermeiden. *) Erstes Zusatzpatent Nr. 95331. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Compensation winding connected in series with the direct current armature for single armature converters according to patent no .: 91735, characterized in that the same is arranged around the direct current armature in grooves of the closing iron ring in such a way that the triangular direct current armature field is deformed into an approximately sinusoidal field, for the purpose of upper fields and to avoid uneven distribution of voltage on the collector. *) First additional patent No. 95331. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT96980D 1917-03-21 1922-06-14 Compensation winding for single-armature converters connected in series with the DC armature. AT96980B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT91735T 1917-03-21
AT96980T 1922-06-14

Publications (1)

Publication Number Publication Date
AT96980B true AT96980B (en) 1924-05-26

Family

ID=25605351

Family Applications (1)

Application Number Title Priority Date Filing Date
AT96980D AT96980B (en) 1917-03-21 1922-06-14 Compensation winding for single-armature converters connected in series with the DC armature.

Country Status (1)

Country Link
AT (1) AT96980B (en)

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